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fix(monitor): chặn cận độ dài khi ghi nhật ký socket chuột, bản dựng hết cảnh báo #493

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Merged
nhktmdzhg merged 1 commit into from
Sep 14, 2026
Merged

fix(monitor): chặn cận độ dài khi ghi nhật ký socket chuột, bản dựng hết cảnh báo #493

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6 changes: 5 additions & 1 deletion src/lotus-monitor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
#include "lotus-monitor.h"
#include "lotus-utils.h"

#include <algorithm>
#include <cstdio>
#include <cstring>
#include <string>
Expand Down Expand Up @@ -110,7 +111,10 @@ void mousePressResetThread() {
needEngineReset.store(true, std::memory_order_release);
g_mouse_clicked.store(true, std::memory_order_release);
} else {
LOTUS_WARN("Unexpected message received from mouse socket: " + std::string(buf, n));
// Clamp for the compiler's benefit: n is already known to be in [1, sizeof(buf)]
// here, but GCC cannot prove it and warns that the length may be a huge size_t.
const size_t len = std::min(static_cast<size_t>(n), sizeof(buf));
LOTUS_WARN("Unexpected message received from mouse socket: " + std::string(buf, len));
}

} else if (ret < 0 && errno != EINTR) {
Expand Down
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